Sole rounding and channeling machine



Nov. 9, 1954 c. w. BAKER SOLE ROUNDING AND CHANNELING MACHINE 6 Sheets-Sheet. 1

Filed Oct. 4, 1950 m Q m 9s mam mum lnvento Cory/in W. Bal rer 1954 c. w. BAKER SOLE ROUNDING AND CHANNELING MACHINE 6 Sheets-Sheet 2 Filed Oct. 4, 1950 In uen i01 Cora/in W Baker SN/mam mmm mmm mum mm mbv mmm c. w. BAKER 2,693,608 SOLE ROUNDING AND "CHANNELING MACHINE I 6 Sheets-Sheet 3 M 2 w 0 4 2 mm H mm m 2 2 2 w a 8 -1 4 w ,W; r m 2 Y 2 4 6 8 .0 4, 8 mm M2] n m a. 2 L w 8 3 m 0 .l 4 4- Fwfi 2 0 2 0O Mm M 4 M w 4 33 Nov. 9, 1954 Filed Oct. 4, 1950 In van in F C' rwz'n W. Baker Nov. 9, 1954 c. w. BAKER 2,693,608

SOLE ROUNDING AND CHANNELING MACHINE Filed Oct. 4, 1950 6 Sheets-Sheet 4 l/rz venzm Cora/in W. Baker Nov. 9, 1954 c. w. BAKER 2,693,608

SOLE ROUNDING AND CHANNELING MACHINE Filed Oct. 4, 1950 6 Sheets-Sheet 5 F91 754 m2 /60 m 7/8 7/6 I ma 714 [n verzzfor Corw NOV. 9, 1954 c w BAKER SOLE RQUNDING AND CHANNELING MACHINE 6 Sheets-Sheet 6 Filed Oct. 4, 1950 [nuen tow Cora/Zn W Baker United StatesPatent "O 2,693,608 I SOLE ROUNDING AND CHANNELING MACHINE Corwin W. Baker, Hamilton, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application October 4, 1950, Serial No. 188,412

7 Claims. (Cl. 12 -85.2)

This invention relates to machines for rounding and channeling the soles of shoes, and is concerned with improving the operating mechanism of a machine of the type disclosed in United States Letters Patent No. 2,470,127, granted on May 17, 1949, upon an application of Corwin W. Baker. More particularly, the invention is directed toward the simplification and improvement of gaging mechanism adapted for use in this type of machine as disclosed in United States Letters Patent No. 2,482,092, granted on September 20, 1949, upon another application of Corwin W. Baker.

The illustrative machine and the machine .of the firstmentioned Baker patent are similar in' respect to the action of their rounding and channeling mechanism. That is, a crease guide and a bottom rest are oscillated to and fro together to impart intermittent feeding movements to a shoe disposed between them. Toward the end of each feeding movement of the shoe a reciprocatory chopping knife trims the sole edge, cutting against an anvil which supports the shoe against'the cutting action of the knife. If it is desired also to channel the sole, the bottom rest may be fitted with a channeling knife which makes a channeling cut during each return stroke of the bottom rest. The proper guidance of the shoe during the rounding operation is of the utmost importance because the character of the shoe contributed by its sole edge extension is determined at this time.

The shoe is positioned while the sole is being trimmed along each side of the shank by a crease guide which is shaped so as to be readily received within the relatively deep crease between the shoe upper and the margin of the sole at this part of the shoe. While the remainder of the sole edge, about the forepart, is being trimmed, the shoe is positioned by a forepart gage which is arranged to position the shoe by engagement with the side of the upper adjacent to the margin of the sole. The control of the shoe is transferred between the crease guide and forepart gage as the rounding cut passes the ball line of the shoe at each side thereof.

One object of the invention is to provide mechanism, which is simple from the standpoints of both construction and adjustment, for moving the crease guide and forepart gage into and out of their operative positions, it being understood that when either one is moved to its operative position the other is simultaneously moved to its inoperative position in such a manner that the positioning of the work will not be interrupted, and that the trimming cuts made under these conditions will be smoothly blended into each other.

To this end, and in accordance with one feature of the invention, the illustrative machine comprises mechanisms for operating the forepart gage and crease guide which are characterized by their independent adjustability, as well as the use of a common treadle-operated rock shaft for driving the mechanisms on account of which their proper coordination is permanently insured.

In shoes having a variable 'sole edge extension the width of the latter gradually diminishes at each side of the shoe from the ball line toward the toe. In my prior machine of Patent 2,482,092, mentioned above, this graduated width of the soleextension is obtained by the use of a forepart guide which rolls. upon the shoe in response to the feeding movement thereof. This guide is usually adjusted so that, its effective radius gradually diminishes from its, center toward each end, one side of the gage being used in operating upon the right shoe of a pair, and the other side of the gage being used while operating upon the left shoe, as is fully described in my patent last mentioned above. This rotation of the forepart gage in my prior machine is resisted by a relatively light spring which, upon the removal of the second shoe of a pair from the gage, returns the latter from its final guiding position to its initial guiding position in readiness for positioning the first shoe of a succeeding pair to be operated upon. It will now be evident that if, during a rounding operation, the pressure of the shoe against the forepart guide is relieved to a point where the guide. can slip, the above-mentioned spring will cause the guide to be moved backwardly prematurely, and the coordination between the guide and the work will be lost. 1

In order to obviate this possibility the forepart guide in the illustrative machine is so mounted that there is no resistance to its turning in response to the frictional engagement of the shoe therewith, and means is provided, in accordance with another feature of the invention, which utilizes the bodily retractive movement of the forepart guide out of its operative position upon the completion of the rounding operation performed on the second shoe of a pair to return the forepart guide toits initial guiding position. This means, as embodied in the illustrative machine comprises a pair of cooperating members one of which is carried by the forepart guide, the members being so mounted and arranged that, while they engage each other during the above-mentioned retractive movement of the forepart gage after the second shoe of a pair has been operated upon, they do not engage each other, and hence do not affect the guiding position of the guide, during its retractive movement at the end of the rounding operation performed upon the first shoe of a pair.

These and other features of the invention will now be more fully described in the following specification and will be pointed out in the claims.

In the drawings,

Fig. l is a side elevation of an illustrative machine (as viewed from the left) embodying the invention, the frame of the machine being shown as broken away to expose the operating mechanism, parts of which are shown in section; I

Fig. 2 is a plan view of the structure shown in Fig. 1;

Fig. 3 is a front elevation of the machine, the anvil and parts of the guiding mechanism having been omitted;

Fig. 4 is a front elevation of the principal elements of the guiding mechanism which have been omitted from Fig. 3, the forepart gage being shown in its initial guiding position;

Fig. 5 is a diagrammatic View of the forepart gage in its final guiding position;

Fig. 6 is an elevation illustrating the operating mech Fig. 8 is a plan view of the mechanism for operating the crease guide;

Fig. 9 is a plan view of the mechanism for operating the anvil; and

Fig. 10 is a plan view of the ing the rounding knife.

Several of the shoe engaging elements of the present machine are constructed and are arranged like the corresponding parts in the well-known Goodyear Rounding and Channeling Machine as disclosed in the Perry Patent No. 1,030,606, granted on June 25, 1912. These parts comprise a bottom rest 10 (Fig. l) carrying a channeling knife 12, a crease guide 14, an anvil 16, and a reciprocatory chopping knife 18 which cuts against the anvil to trim the edge of the sole of a shoe presented to the machine with the margin of the sole inserted between the bottom rest 10 and the crease guide 14 in the usual manner.

The knife is moved with a simple harmonic motion toward and away from the anvil by mechanism which will be described later. The anvil 16 is moved toward the knife during its cutting stroke, into a position slightly to the rear of the crease guide 14, in order that the cut- .ting thrust of the knife will not be exerted upon the mechanism for operatbrease guide 14. When the anvil and the knife reach the ends of their strokes toward each other they just meet, whereby the sole is completely severed.

When the knife will have moved out of the work during its return stroke, the work now being supported by the crease guide 14 against the thrust of the bottom rest 10, simultaneous feeding movements of the crease guide and bottom rest take place from left to right. This feeding movement of the crease guide is simple harmonic and is completed at the midpoint of the cutting stroke of the knife. The feeding movement of the bottom rest is terminated at this same time, after which it has a dwell followed by a quick return movement occurring during the latter part of the cutting stroke of the knife, and finally, another dwell which terminates at the end of the return stroke of the crease guide. It thus appears that the channeling cut occurs during the return stroke of the bottom rest, and while the work is held against retrograde movement by the clamping action of the knife and anvil upon the work caused by the cutting thrust of the knife. The manner in which the above-mentioned parts are mounted in the machine and the operating mechanism therefor will now be described.

A vertical crank shaft 20 (Fig. 1) is supported by upper and lower antifriction bearings 22, 24 the former being carried by a cover plate 26 secured to the top of the frame 28, and the latter bearing being mounted in a strut 30 which projects forwardly from the rear wall of the frame. A spiral gear 32 fixed upon the lower end of the crank shaft meshes with another gear 34, the latter being fixed to a drive shaft 36 carrying a pulley 38 upon its outer end which projects from a bearing unit 40 fixed to the rear wall of the frame. Fixed to the crank shaft near its upper end is an eccentric 42 (Fig. 8) which imparts, through the connections next to be described, the above-mentioned feeding movement to the crease guide 14.

A connecting rod 44 surrounds the eccentric 42 and is connected by a ball-and-socket joint 46 to a lever 48 which is integral with a two armed yoke 50 having a hub 52. The yoke is mounted to swing about a vertical axis at the center of a shaft 54, which is clamped in the hub 52 and is supported by upper and lower antifriction bearings 56, 58 (Fig. 1). The upper bearing is carried by a cover plate 60 which is secured to the upper side of the frame. The lower bearing is carried by a support 62 (Figs. 1 and 9) which is fixed to the upper part of the frame by a series of screws 64. Extending between the lower ends of the yoke 50 (Figs. 1 and 8.) is a bolt 66 upon which a U-shaped arm 68 is mounted to swing vertically, the arm being urged upwardly by a spring 70 stretched between the yoke andthe arm. The crease guide 14 is mounted on a bracket 72 at the forward end of the arm for adjustment heightwise of, as well as toward and away from the bottom rest 10. The bracket has elongated slots 74 arranged to receive screws 76 by which the bracket is secured tothe arm in any desired position fore-and-aft of the machine. Screws 78 which pass through vertical slots formed in the crease guide 14 permit the latter to be fixed upon the bracket 72 in any desired position heightwise of the bottom rest.

The mounting of and the operating mechanism for the bottom rest 10, which cooperates with the crease guide 14 to feed the work, will now be described. The bottom rest is mounted, in the usual arcuate guideway on a slide 80 (Figs. 1 and 7), to swing flatly into engagement with the bottom of a shoe presented thereto about a horizontal axis near the upper forward edge of the bottom rest. Further support for the shoe is provided by a pad 82 which is mounted for universal movement upon a ball-and-socket joint at the lower end of the slide. The slide is movable vertically in a slideway 84 formed in an arm 86, primarily for the purpose of varying the position of the channeling knife, the arm being integral with a shaft 88 which is mounted. to slide axially and oscillate in the frame. This shaft is supported near its forward end in a bearing 90 in the front wall of the frame, and is supported at its rear end within a bushing 92 which is mounted to slide in a bearing 94 integral with and extending upwardly from the bottom of the frame. The shaft 88 is bored to receive a spring 96 which urges the shaft forwardly of the machine and causes the bottom rest to be yieldingly held against the shoe, and the shoe to be urged toward the crease guide 14. The rear end of the spring abuts the inwardly flanged end of the bushing 92 upon which is seated a stud 98. For the purpose of adjusting the compression of the spring 96 an eccentric 100, engaging the stud and fixed to a shaft 102, may be rotated into any desired position by turning a. crank 104 fixed upon the outer end of the shaft. The shaft 102 is mounted in a bearing 106 (Fig. 2) integral with a cover plate 108 which is secured to the frame, and is provided with a series of holes 110 (Fig. l) which are arranged to receive a retractable plunger 112 carried by the crank 104, so that the eccentric 100 may be locked in any desired position of adjustment.

The bottom rest may be retracted to facilitate inserting work into the machine by depressing a treadle (not shown) which is connected to a treadle rod 114 (Figs. 3 and 7). This rod operates a crank 116 which is fixed to a shaft 118 rotatably mounted in the right-hand side of the frame. Another crank 120 fixed to the inner end of the shaft, and extending downwardly therefrom has mounted upon its lower end a roll 122 which engages the forward end of a stud 123 carried by a bell crank 124 which is clamped to the shaft 88 by a screw 126. Forward movement of the bottom rest is limited, so that it will not interfere with the crease guide or anvil, by a stop screw 128 which is threaded into the frame and at its rear end abuts a projection 130 extending from the crank 120. The mechanism for oscillating the work rest will next be described.

To the upper end of an arm 132 (Figs. 1 and 7) extending upwardly from the bell crank 124 there is connected by means of a ball-and-socket joint 134 one end of a link 136, the other end of this link being connected by a ball-and-socket joint 138 to one arm of a bell crank 140 which is mounted to swing horizontally upon a stud 142. This stud is supported by bosses 144, 146 which project inwardly of the frame from its right side and bottom, respectively. The other arm of the bell crank 140 carries a roll 148 which runs upon a cam 150, the latter being fixed to the crank shaft 20 above the strut 30. The roll 148 is yieldingly held in engagement with the cam 150 by a series of dished washers 152 which are bored freely to receive a stud 154 the head of which engages a hardened shoulder 156 on the bell crank 14%). The washers are backed up by a cap 158 which is threaded into a cover 160 secured to the righthand wall of the frame. By turning the cap- 158 the cornpressionv of the washers. 152 may be varied to obtain the desired pressure between the roll 148 and cam 150-. A flanged bushing 162 arranged to slide freely within the cap 158 alines. the inner end of the stud 154 with respect to the cap.

The mounting of and operating mechanism for the knife 18 will now be described. The knife is adjustably fixed by means of a set screw 164 and clamp plate 165 (Figs. 1, 3 and 10) as is usual in this type of machine, to the forward end of a carrier 166 which is arranged to slide within a T-slot 168 formed in the lower part of the above-mentioned support 62, so that the knife may be reciprocated horizontally toward and away from the anvil 16. A ball-and-socket joint 170 connects the carrier 166 with the forward end of a connecting rod 172 which runs upon an eccentric 174 fixed to the shaft 20 above the cam 150 As outlined above, the anvil 16 is moved rearwardly to meet the knife at the end of its cutting stroke whereby the crease guide 14 is relieved of the cutting thrust of the knife. Moreover, during the return stroke of the knife the anvil is moved forwardly of the shoe supporting surface of the crease guide to cause the clamping action of the crease guide upon the shoe to be resumed when its feeding movement begins. The mounting of and operating mechanism. for the anvil 16 will now be described in detail. The anvil is fixed upon the forward end of a tubular shaft 176 (Figs. 2 and 9) which is mounted to reciprocate axially thereof in the support 62. An arm 178 fixedto the rear end of the shaft has pivoted thereon at 180 a toggle link 182 which is joined at 184 to another toggle link 186, the latter being pivoted to the support 62 at 188. A link is pivoted at 184 to the toggle links and is connected by a ball-and-socket joint 192 to the forward end of a lever 194 which is mounted to swing in a horizontal plane upon a stud 196 fixed. in a boss 197 (Fig. 1) extending downwardly fromthe upper part of the frame. The rear end of the lever is connected by a ball-and-socket joint 198 to a connecting rod 200 which runs upon an eccentric 202 fixed to the crank shaft 20. It will now be understood that as the crank shaft is rotated from its position as shown in Fig. 9 the anvil will be moved, as the toggle links 182, 186 are straightened, into engagement with the shoe, and slightly to the rear of the work engaging surface of the crease guide, whereby the cutting thrust of the knife is supported by the anvil rather than the crease guide. This movement of the anvil is followed by a short dwell, which occurs as the cutting stroke of the knife is completed, because of the fact that movement of the toggle links 182, 186 when in a substantially straightened condition imparts little, if any, movement to the shaft 176. Further rotation of the crank shaft throughout one revolution causes the anvil to be retracted forwardly away from the shoe to permit the 1grease guide again to grip the shoe during its feeding stro e.

As has been fully illustrated and described in my prior Patent 2,482,092 referred to above, the sole rounding operation is first carried out on a right shoe of a pair, then on the left shoe of the same pair, and so on through a rack of shoes awaiting the sole rounding operation. This operation upon each right shoe is started at the inside heel breast line and is carried along the shank to the inside ball line with the shoe under the control of the crease guide 14. At this point a forepart gage 204 is lowered from its inoperative position (Figs. 1 and 4) into engagement with the side of the shoe upper adjacent to the margin of the sole, taking over the control of the shoe from the crease guide which is then permitted to rise far enough so that it does not interfere with the guiding effect of the forepart gage. The forepart gage 204 illustrated herein is similar to that disclosed in my above-mentioned Patent 2,482,092 in that it has a pair of adjustable lateral segments 206, 208, one at each side of a central segment 210, these segments all being mounted upon a carrier 212, for rolling engagement with the shoe, about a shaft 214.

When the forepart gage is lowered into its operative position at the inside ball line of the right shoe the left-hand lateral segment 206 is engaged by the shoe at the lowermost point of its periphery near its left-hand end. This is the initial guiding position of the gage. The rounding operation is now carried around the shoe approximately to the outside tip line, the shoe sliding on the segment 206 because the forepart gage is prevented from rotating about the shaft 214 during this part of the operation by a latch 216. This latch is received in a notch 218 in a stop 220 which is mounted for adjustment upon the carrier 212 peripherally thereof, and is held in adjusted position by a set screw 222 threaded into the carrier 112. If from the outside tip line to the outside ball line the sole edge extension is to be increased, as is usual, the operator trips the latch 216 (by the use of mechanism later to be described) permitting the forepart gage to roll upon the shoe until the latch becomes reengaged with the carrier within a notch 224 in its periphery diametrically opposite to the central segment 210. This is the intermediate guiding position of the forepart gage. It is to be understood that to produce the above described extension upon the sole edge the lateral wings 206. 208 will have been adjusted so that their eifective radii increase as the central segment is approached. As the rounding cut passes from the outer ball line of the right shoe into the shank the forepart guide is raised and the crease guide is simultaneously lowered, whereby the latter takes over the control of the shoe while the remainder of the shank portion of the sole is rounded. Having outlined the use and operation of the forepart gage and crease guide in respect to a rounding operation performed upon a right shoe, the mounting of the forepart gage and the means for operating this gage and the crease guide will now be described in detail.

The shaft 214, upon which the forepart gage is swung between its different guiding positions, is carried by an arm 226 (Figs. 1 and 2) having at its upper end a slide 228 which is mounted for vertical adjustment within a slideway 230 formed in a standard 232. An adjusting screw 234 carried by the standard and threaded into the slide is provided for adjusting the slide heightwise. The standard 232 is fixed to a pad 236 integral with right and left hand arms 238, 240 which are mounted to swing with respect to the frame on solid and hollow studs 242, 244 (Fig. 3), respectively, coaxially mounted in the sides of the frame. Three studs are so positioned that the forepart gage, when lowered, will just clear the anvil 16 and crease guide 14.

The forepart gage is swung bodily into its operative position by depressing a treadle (not shown) which lowers a treadle rod 246. Such movement of the treadle rod is transmitted yieldingly through a spring 248 and swivel 249 to a lever 250 which is fixed to a rock shaft 252 mounted to rotate freely in the upstanding arms of a bracket 254 secured to the top of the frame of the machine. Fastened to the midportion of the shaft 252 is a lever 256 which is pivoted by means of a pin 258 to a link 260, this link being pivoted at 262 to a projection extending from the pad 236. It will now be evidient that when the treadle rod 246 is lowered the lever 256 and link 260 will be straightened, causing the forepart guide to be lowered into its operative position. This action of the lever and link is adjustably limited by a set screw 264 which is threaded in the link 260 and is arranged to abut a shoulder upon the lever 256.

Simultaneously with the lowering of the forepart gage 204 into its operative position the .crease guide is raised, gradually at first and then abruptly, by mechanism driven from the rock shaft 252. Upon the right-hand end of the shaft 252 there is fixed an arm 266 (Fig. 6) to which there is pivoted at 268 a member 270 having a cam surface 272 the effective slope of which is adjusted as the member is swung upon the pivot at 268. This adjustment of the memberis effected by turning a screw 274 which is threaded into the member and bears against an upstanding arm 276 which is integral with the arm 266. Arranged to run on the cam surface 272 is a follower roll 278 which is carried by a lever 280 mounted to swing freely on a shaft 282 which is mounted to rotate in the bracket 254. The rear end of the lever 280 projects outwardly toward the right and is engaged by a screw 284 which is threaded into another lever 286, this lever also being mounted to swing freely upon the shaft 282. The forward end of the lever 286 is pivoted at 288 to the upper end of a link 290, the lower end of which is pivoted at 292 (Figs. 1 and 8) to the left-hand arm 68 described above in connection with the mounting of the crease guide.

When the forepart gage isin its inoperative position the rearward portion of the cam surface 272 is engaged by the follower roll 278 because of the lifting effect of the spring 70 upon the arm 68. Similarly, the screw 284 is held against the lever 280. Thus, the crease guide is rigidly supported in its operative position against the upward thrust of the shoe when the crease guide is .being used in rounding the shoe at the shank portions. It will further be evident that the operative position of the crease guide may be adjusted, without affecting the adjustment of the cam member 270, by turning the screw 284.

F its operative position, however, the follower roll 278 runs off the forward end of the cam surface 272, permitting the crease guide to rise abruptly out of engagement with the shoe. This movement of the crease guide is .adjustably limited by the engagement of the rear end of the lever 286 with a stop screw 293 which is threaded into the top of the frame.

In order to permit the above-mentioned adjustment of the lateral segments 206, 208 of the forepart gage these segments have arcuate dovetail slides 294, 296 (Fig. 4)

respectively, fitting in similarly shaped recesses in the rear side of the carrier 212. Each of these slides is concentric with the adjacent end of the periphery of the central segment 210, all the segments being so arranged that their peripheries are substantially continuous. The lateral segments are adjusted by turning a cam plate 298 relatively to the carrier 212. This cam plate is mounted to rotate freely on the hub of the carrier 212 and is provided with a pairof cam slots 300, 302 arranged to receive roller studs 304, 306 respectively. The stud 304 is fixed upon the slide 294, but the stud 306 is eccen- This adjustment varies the relation of the lever .286 with respect to the lever 280 for any given adjustment of the cam member 270. When the forepart gage trically mounted upon the slide 296 to permit adjustment of the lateral segment 208 relatively to the other one in case of any discrepancy in the manufacture of these parts. The cam plate 298 is locked in adjusted position by setting up a wing nut 308 which is threaded upon a stud 310. Fixed to the cam plate and projecting through a clearance slot 312 in the carrier. Since the forward beveled surfaces of the lateral and central segments engage the shoe upper in carrying out the guiding function of the forepart gage, it is desirable that they be continuous. To this end, each lateral segment is provided with a radial groove 314 at its end adjacent to the central segment, the latter having tongues 316 which closely fit within the grooves, and therefore hold the lateral segments in the same plane with the central segment regardless of the angular adjustment of the lateral segments.

In carrying out a channeling operation it is usually desired to have the channel in the shank portion of the sole farther from the sole edge than it is in the forepart. Accordingly, in operating upon a right shoe as described above the bottom rest 10, which carries the channeling knife 12, is raised slightly as the rounding cut passes into the forepart at the inside ball line. Similarly, when the rounding cut upon the right shoe passes from the forepart into the outside shank portion the channeling knife is lowered to its original position. These movements of the bottom rest and channeling knife occur simultaneously with the shifting of the forepart gage into and out-of its operative position, and are provided by the following mechanism driven by the rock shaft 252. which also is common to the operating mechanisms for the crease guide and forepart gage.

This mechanism comprises a cam 318 (Figs. 1, 2 and 3) having a groove arranged to receive a roller stud 320 mounted upon the upstanding arm of a bell-crank lever 322. This lever is pinned to the above-mentioned shaft 282 and has an elongated T-slot 324 along which a crank pin 326 may be positioned at any desired point in order to obtain a variable throw of the crank pin for a given angular movement of the lever 322.

Pivoted upon the crank pin 326 is the upper end of a rod 328 (Fig. 3) the lower end of which is pivoted at 330 to a slide 332 mounted for vertical movement in a T-slot in a bearing block 334 which is secured to the left wall of the frame by screws 336. The slide 332 has formed therein a horizontally elongated slot (not shown) arranged to receive a rod 338 whch is fixed to the outer ends of a U-shaped yoke 340. Vertical elongated slots 342 formed in the sides of the bearing block 334 permit the rod 338 to rise and-fall with the slide 332 without interference with the bearing block. The yoke 340 is fixed. to a shaft 344 (Figs. 1 and 3) which is mounted to rotate and also to slide axially in one bearing 346 in the front wall of the frame, and another bearing 348 formed in the above-mentioned bearing 94. Fixed to the outer end of the shaft 344 is an arm 350 which is connected to the slide 80 by a link 352. It will now be evident that the sliding connection between the rod 338 and the slide 332 permits the bottom rest to be moved up and down freely regardless of the position of the bottom rest toward and away from the crease guide or anvil.

The use and operation of the forepart gage 204 has already been described in connection with the rounding operation performed upon a right shoe. The initial guiding positionof the forepart gage for this operation is that in which it is illustrated in Fig. 4. At the end of the rounding operation upon a right shoe, the gage will have been moved into its intermediate guiding position which is determined by the engagement of the latch 216 within the notch 224, also as described above. In operating upon a left shoe the rounding operation is begun at the outside heel breast line, the crease guide being used to position the shoe until the rounding out passes into the forepart at the outside ball line. At this time the forepart gage 204 is lowered into its operative position bringing the central segment 210 into engagement with the shoe, the forepart gage now taking over the control of the shoe from the crease guide which rises into its inoperative position. The latch 216 is immediately retracted from the notch 224 to permit the forepart gage to roll upon the shoe, providing the desired diminishing sole edge extension from the outside ball line approximately to the outside tip line, when the gage will have been turned so far as to bring a stop 354 thereon into engagement with the latch. This is the final guiding position of the forepart gage. This step is mounted for adjustment upon the carrier 212 peripherally thereof, like the stop 220, and is secured in adjusted position bymeans of a screw 356 which is threaded into the carrier and passes through an elongated slot in the stop.

With the forepart gage now in its final guiding position, the portion of the lateral segment 208 which is opposite to the stop 354 is engaged by the shoe, and the rounding cut on the left shoe is carried around the forepart to the inside ball line, the shoe sliding against the segment 208. When the latter point on the shoe has been reached the forepart gage is raised, and the control of the shoe is again taken over by the crease guide. During this movement of the forepart gage, away from its operative position, it is returned to its initial guiding position by the mechanism next to be described, in order that the gage will be properly positioned to guide the right shoe of the succeeding pair of shoes to be operated upon.

To the rear side of the carrier 212 there is fixed by means of screws 358 (Figs. 1, 4 and 5) a finger 360 from which there extends rearwardly a projection 362, which is slightlyeccentric with respect to the axis of the shaft 214 upon which the forepart gage rotates between its different guiding positions. When the forepart gage is in its final guiding position and the gage is raised to its inoperative position, the path of the projection 362 intercepts an abutment 364 which is fixed by a screw 366 to the forward end of the support 62. Accordingly, when the projection and abutment engage each other the carrier 212 is suddenly swung in a counterclockwise direction, this movement of the carrier being so rapid that the latch 216 does not have time to become engaged within the notch 224. However, when the stop 220 engages the latch the latter moves into the notch 218, locking the forepart gage in its initial guiding position in readiness for the next rounding operation which is to be performed upon a right shoe.

The mounting of and operating mechanism for the latch 216 will now be described. The latch is pivoted at 368 (Fig. 1) upon the arm 226 and is urged downwardly into engagement with the carrier 212 by a springoperated plunger 370 mounted to slide vertically in the arm 226 in engagement with the upper side of the latch. In an arm 372, integral with and extending downwardly from the latch 216, there is threaded a screw 374 the inner end of which lies in the path of movement of a cam surface 376 formed upon a lever 378, the latter being pivoted upon a screw 380 threaded into the pad 236. When the lever 378 is swung in a counterclockwise direction the cam surface 376 engages the screw 374 causing the latch 216 to be lifted'out of one or the other of the notches 218, 224 in the carrier. Such movement is imparted to the lever 378 by connections comprising a plunger 382 (Fig. 3) mounted to slide axially within the hollow stud 244 upon which the arm 240 is mounted. A spring 384 compressed between an internal shoulder on the stud 244 and a collar 386 pinned to the plunger 382 urges the latter outwardly of the frame of the machine and causes the lever 378 normally to be held in its inoperative position. The plunger is operated by a crank 388 which is pivoted at 390 to a support 391 fixed to the frame of the machine, this crank having an arm 392 lying within the path of movement of a conical collar 394 which is fixed to a vertical rod 396; This rod is connected at its lower end to a knee pad (not shown) which, when struck by the operator, lowers the rod and such operation of the rod causes the release of the latch 16 from the carrier 212 through the connections just described. The upper end of the rod 396 is guided in a swivel block 398 which is mounted upon the support 391 and a spring 400 compressed between the swivel block and a collar 402 fixed to the rod normally holds the rod in its uppermost position.

In order to cushion the upward movement of the forepart gage into its inoperative position, a roller stud 404 (Fig. 6) is yieldingly held into a V-shaped opening between the front of the frame of the machine and a plate 406 fixed to the arm 238. The roller stud is mounted upon the lower end of'an arm 408 the upper end of which is connected by a bolt 410 to a link 412, the latter being pivoted at 414 to the bracket 254. A spring 416 stretched between the bolt and the arm 238 urges the roller stud downwardly.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: i

1. In a rounding and channeling machine, a rounding knife, a crease guide and a forepart gage for variably positioning a shoe with respect to said knife whereby a variable sole edge extension is imparted to the shoe, means for moving said forepart gage into and out of operative position, mechanism for moving said crease guide into and out of its operative position in alternation with said forepart gage, said means and mechanism comprising an operator controlled rock shaft common thereto, said mechanism comprising a cam rotatable with said rock shaft, extensible connections between said cam and said crease guide for adjusting the position of said crease guide relatively to said knife, and means for adjusting said cam relatively to said shaft to vary its effective throw thereby to control the movement of said crease guide between its operative and inoperative positions.

2. In a rounding and channeling machine, a rounding knife, 3. crease guide and a forepart gage for variable positioning a shoe with respect to said knife whereby a variable sole edge extension is imparted to the shoe, means for moving said forepart gage into and out of operative position, mechanism for moving said crease guide into and out of its operative position in alternation with said forepart gage, said means and mechanism comprising an operator controlled rock shaft common thereto, said mechanism comprising a cam driven by said rock shaft, a pair of levers having a common pivot, one of said levers having a cam follower arranged to engage said cam and the other of said levers being connected to said crease guide, and means for adjustably connecting said levers whereby the position of said crease guide relatively to said knife may be varied.

3. In a machine for rough rounding the sole of a lasted shoe, a rounding knife to which the margin of the sole is progressively presented, a gage movable bodily. into and out of operative position, said gage also being mounted to rotate freely in one direction in rolling engagement with the shoe from one guiding position to a succeeding guiding position in order to position the shoe in varying relation to said knife, and means operated by the bodily movement of said gage out of its operative position for rotating said gage in the opposite direction.

4. In a machine for rough rounding the sole of a lasted shoe, a rounding knife, a gage movable bodily into and out of operative position, said gage also being mounted to rotate in response to feeding movement of the shoe held thereagainst from an initial guiding position to another guiding position whereby the shoe is positioned in varying relation to the knife according to the desired variable extension of the sole edge, and means for returning said gage to its initial guiding position, said means comprising a finger mounted upon said guide and a fixed abutment disposed in the path of movement of said finger when said gage is moved out of its operative position.

5. In a machine for rough rounding the sole of a lasted shoe, a rounding knife, a gage movable bodily into and out of operative position, said gage also being mounted to rotate in successive steps from an initial guiding position into an intermediate guiding position and thence into a final guiding position in response to feeding movement of the work, and means for returning said gage to its initial guiding position from its final guiding position, said means comprising a fixed abutment and a finger mounted eccentrically upon said guide in such a position that with said gage in its final guiding position said finger is moved into engagement with said abutment during movement of said gage bodily out of its operative position.

6. In a sole rounding machine, a rounding knife to which the margin of the sole is progressively presented, a gage for positioning the shoe in varying relation to said knife whereby a variable sole edge extension is formed on the shoe, said gage being mounted to swing into and out of operative position, said gage also being mounted for rotative guiding movement from an initial guiding position to intermediate and final guiding positions in response to feeding movement of the work, means for arresting the rotative guiding movement of said gage when it reaches its intermediate and final guiding positions, and means constructed and arranged to utilize the movement of said gage out of its operative position to return said gage to its initial guiding position from its final guiding position, said means comprising cooperating members one of which is eccentrically mounted upon said gage, said members being moved into cooperative relation by the movement of said gage from its intermediate guiding position into its final guiding position.

7. A gage for a rounding machine comprising a central work guiding segment and lateral work guiding segments one at each side of and contiguous to said central segment, each of said lateral segments being mounted to swing with respect to said central segment about an axis at the junction of their peripheries, means for adjusting said lateral segments simultaneously whereby the shape of the gage is varied, said means comprising a plate mounted to rotate with respect to said central segment and having cam slots formed therein, projections extending from said lateral segments into said cam slots, one of said projections being mounted for eccentric adjustment to permit equalizing adjustment of said lateral segments, and means for securing said cam plate in adjusted position.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,331,789 Smith Feb. 24, 1920 2,480,828 Baker Sept. 6, 1949 2,490,192 Baker Dec. 6, 1949 

